Hello , I'm 45 year old male with type 2 diabetes. Since I was diagnosed I've been keeping my blood sugar pretty good. Mornings it's around 145 and at night around 100. I've been taking 1000 mg metformin 2 X a day. I just had toes removed and had infection so was in hospital. Doctors sent me home with new prescription: keep taking metformin twice a day at 1000 mg like usual but use 10 mg of Lantus pen at 8 am every day and blood sugar check 4 times a day, use sliding scale to determine how many units of the regular needle injection.. well , my question is , why so much if my a1c at hospital was 10.2 but doc said could be from infection, why take so much insulin and will I get sick or overdose or coma?